QUESTIONS & ANSWERS
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Description
If your iPhone 18 Pro Max is draining faster than it used to, shutting down in the cold, or showing Service under Battery Health, the battery has worn out. Every lithium battery loses capacity with charge cycles.
About the iPhone 18 Pro Max
The iPhone 18 Pro Max is part of Apple's fall 2026 lineup. New models take a few months to reach full parts supply, which is why some prices are quoted rather than listed right now. It is Apple's newest and largest Pro, and replacement parts are only starting to reach the repair market.
Signs you need this repair
- Phone runs hot or feels slow
- Case or screen lifting (a swollen battery; stop using it)
- Battery Health says Service or shows under 80%
- Shuts down unexpectedly, especially in the cold
What we do
We remove the old battery safely, clean off the adhesive, fit the new cell, reseal the phone and run a charge and drain test.
Price
Parts for this repair on the iPhone 18 Pro Max are still coming into supply, so the price is quoted rather than listed. Give us a call at 888-494-4349, or order and ship it in, and we will confirm the exact price before any work starts.
Mail-in or walk-in
Order online and we email you a prepaid UPS label with $100 of shipping insurance. Pack the iPhone 18 Pro Max on its own in a sturdy box with some padding, no case, cable or charger, and tuck your order confirmation inside. It is checked in on arrival, repaired, tested and shipped straight back with tracking.
Local? Bring it to our Jupiter store on Donald Ross Road. We are open Monday to Saturday 10 to 7, and Sundays 11 to 5 by appointment.
Warranty
You get a 90-day warranty on the part we fit. If it fails from a defect in that time we fix it free; new accidental damage is not included.
Common questions
Will my iPhone show an unknown part message?
With a non-Apple battery, iOS shows Unknown Part under Settings > General > About > Parts and Service History and may say it cannot verify a genuine Apple battery, so the Battery Health reading may not be accurate. The notice does not stop you using the phone, and we charge- and drain-test every battery we fit.
How long does it take?
Usually same day in store, and quickly for mail-in once it arrives.
How do I check that my phone is an iPhone 18 Pro Max?
Open Settings > General > About. The Model Name line should read iPhone 18 Pro Max. If it shows something else, pick that model's repair instead, or call us and we will point you to the right one.
Talk to a real technician at 888-494-4349, or email support@ifixyouri.com. We are happy to confirm the fault before you buy.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.


